Geo Omori

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Jyoji "Geo" Omori
food poisoning
StyleBrazilian jiu-jitsu, judo
Teacher(s)Tokugoro Ito
Notable studentsLuiz França[1]

Jyoji Omori - or Geo Omori as he became known in Brazil - (1898–1938) was a Japanese-born Brazilian martial artist, and one of the creators of judo-based martial arts in Brazil.[2]


Born in Tokyo, Omori joined the Kodokan school in 1907 at age 9 and gained his black belt in 1915 at age 17. He learned under Tokugoro Ito and was a training partner of the famed Sanpo Toku.[3]

After moving to Brazil in 1925, he taught jujitsu/judo in Rio de Janeiro and in 1931 he opened a school in São Paulo in Edificio Martinelli, the first skyscraper in Brazil.[4] He was instrumental in the establishment of Brazilian jiu-jitsu by establishing the first Jujitu school in São Paulo.[5] He would later instruct key Brazilian jiu-jitsu founder Luiz França.[5] His other student included Carlos Pereira.[2]

Fighting career[edit]

He was one of the first kings of mixed martial arts of his era.[6] He sparked the Vale Tudo craze of the 1920s and 1930s in Brazil.[5] Geo had an extensive fight history engaging fighters of various styles including capoeira, boxing, and wrestling.[5] A 1928 issue of The New York Times highlighted one of his fights against a "negro" capoeira fighter, in which Geo Omori won.[5] He fought many members of the Gracie family including George Gracie and Carlos Gracie.[5] His feud with Carlos Gracie is well documented.[7] One place of a documented fight of his was Circus Queirolos, a Brazilian Circus.[8] His death in 1938 was attributed to food poisoning.[9]


  1. ^ BJJ Heroes. "Luiz Franca - BJJ Heroes: the jiu jitsu encyclopedia". BJJ Heroes: the jiu jitsu encyclopedia.
  2. ^ a b Martial Arts of the World: An Encyclopedia of History and Innovation, Volume 2 edited by Thomas A. Green, Joseph R. Svinth
  3. ^ Marcial Serrano, O Livro Proibido Do Jiu Jitsu
  4. ^ Super User. "Aloisio Silva Brazilian Jiu Jitsu".
  5. ^ a b c d e f "MMA HOF".
  6. ^ "GTR Reyla Gracie Book Review Chp. 6".
  7. ^ "Bloody Elbow Book Review: Catch Wrestling Round Two by Mark Hewitt". Bloody Elbow.
  8. ^ Geo Omori O Guardiao Samurai
  9. ^ Martial Arts of the World: An Encyclopedia of History and Innovation, Volume 2, edited by Thomas A. Green, Joseph R. Svinth, p. 33.